Some ideas I was thinking about..

Catch the dealer pitching the cards
Chips "splashing" the pot
Player pushing their chips all in
Players standing up when someone pushes all in (usually at the final table for eveyone to want to stand up)
Players emotion when they win/lose a big hand
Players falling asleep at the table
Players rockin out to the headphones
Players stacking their chips after a big hand


Hope this helps, I play a lot of poker so thought I would chime in again

James